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Adaptive Scan-On-Receive Based on Spatial Spectral Estimation for High-Resolution Wide-Swath Synthetic Aperture Radar

Bordoni, Federica und Younis, Marwan und Makhoul, Eduardo und Krieger, Gerhard (2009) Adaptive Scan-On-Receive Based on Spatial Spectral Estimation for High-Resolution Wide-Swath Synthetic Aperture Radar. In: Proceedings of IEEE International Geoscience and Remote Sensing Symposium (IGARSS). IEEE Geoscience and Remote Sensing Symposium (IGARSS), 2009-07-13 - 2009-07-17, Cape Town, South Africa.

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Kurzfassung

This work investigates the possibility of applying direction of arrival (DOA) estimation methods to spaceborne Synthetic Aperture Radar (SAR) systems for high-resolution wide-swath imaging, based on receive beam steering. The conventional algorithm for receive beam steering, denoted as SCORE (Scan-On-Receive), shows a loss of performance in presence of topographic height. In fact, according to SCORE, the steering direction of the receive pattern corresponds to the expected DOA of the echo, which is computed under the hypothesis of a stringent spherical Earth model. In presence of topographic height, SCORE works under model mismatch and losses of several dB could be reached with respect to ideal operational conditions. The work studyes the possibility of overcome SCORE loss of performance by using a data-dependent, adaptive, mechanism for receive beam steering. In particular, a new algorithm for receive beam pattern steering, based on the actual spatial distribution of received signal power, is proposed. The performance of the proposed algorithm is evaluated by Monte Carlo simulations and compared with that of the conventional, not adaptive, SCORE, in different operational scenarios versus the SAR system parameters. Moreover, based on Cramér Rao Lower Bound analysis, the optimal performance achievable by the adaptive approach has been evaluated and used as a benchmark on the performance of the proposed algorithm.

Dokumentart:Konferenzbeitrag (Vortrag, Paper)
Titel:Adaptive Scan-On-Receive Based on Spatial Spectral Estimation for High-Resolution Wide-Swath Synthetic Aperture Radar
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Bordoni, FedericaNICHT SPEZIFIZIERT
Younis, MarwanNICHT SPEZIFIZIERT
Makhoul, EduardoNICHT SPEZIFIZIERT
Krieger, GerhardNICHT SPEZIFIZIERT
Datum:April 2009
Erschienen in:Proceedings of IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Synthetic Aperture Radar (SAR), Digital Beam-Forming (DBF), Scan-On-Receive (SCORE)
Veranstaltungstitel:IEEE Geoscience and Remote Sensing Symposium (IGARSS)
Veranstaltungsort:Cape Town, South Africa
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2009-07-13 - 2009-07-17
Veranstalter :IEEE
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Entwicklung eines Mini-SAR (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte
Institut für Hochfrequenztechnik und Radarsysteme
Hinterlegt von: Dr. Federica Bordoni
Hinterlegt am:09 Dez 2009 12:01
Letzte Änderung:16 Mai 2011 12:19

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